The Transcend PCIe SSD 400S 1TB is a high-performance internal SSD designed for laptops and PCs. With a green color and compact M. 2 form factor, this NVMe PCIe Gen3 x4 drive offers fast read speeds of up to 2100MB/s and write speeds of 1700MB/s. 1.3 technology for optimal performance. The SSD also includes a DRAM cache for efficient data processing, making it a reliable choice for enhancing the speed and responsiveness of your system.